This document describes the analysis and detection methods of low-level sulfur compounds in beer. The Tekmar AQUATek 70 and 3100 Sample Concentrator, along with the Agilent 6890 Gas Chromatograph and Agilent Model 355 Sulfur Chemiluminescence Detector, enable automated quantitative analysis of low-level sulfur compounds in beer. The document also compares two types of gas chromatograph columns.
This document details a method for the quantitative analysis of low-level volatile sulfur compounds in beer. The study utilizes an Agilent 6890 Gas Chromatograph equipped with an Agilent Model 355 Sulfur Chemiluminescence Detector (SCD) and a Tekmar AQUATek 70 and 3100 Sample Concentrator. The sample pathway is Silcosteel to prevent adsorption or decomposition of analytes.
The document provides specific operating parameters for the Tekmar 3100, AQUATek 70, and the SCD. It compares results obtained using two different gas chromatograph columns: the Agilent DB-1 and the Agilent GS-GasPro. The study reports on detection limits, repeatability, and recovery rates for various sulfur compounds found in beer.
| Purge time | 7min |
|---|---|
| Desorb temperature | 225°C |
| Burner temperature | 800°C |
| Hydrogen flow rate | 100 mL/ min |
| Air flow rate | 40 mU min |
| Column length (DB-1) | 30 m |
| Column length (GS-GasPro) | 60 m |
The analysis uses a Tekmar AQUATek 70 and 3100 Sample Concentrator coupled with an Agilent 6890 Gas Chromatograph and an Agilent Model 355 Sulfur Chemiluminescence Detector.
The study compared an Agilent GS-GasPro column and an Agilent DB-1 column.
The purge time is set to 7 minutes.